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天津表土DDT浓度的空间插值方法研究

Keywords: DDT,空间插值,天津表土

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Abstract:

分别运用反距离加权插值法(IDW)、反距离平方加权插值法(ISDW)、多项式回归法(PR)、双线性插值法(BI)以及普通克里格法(OK)共5种方法对天津表土188个采样点的DDT浓度数据进行了空间插值,并对插值精度进行了评估和比较。结果表明,上述5种方法均无系统误差,且方均根误差(RMSE)差别不大,从误差分布来看,普通克里格法表现稍好。188点中,普通克里格法插值误差在0.5和1.0个对数单位以内的百分比分别为62.2%和91.5%。在表土DDT浓度突变的局部,所有插值方法的误差都超过一个对数单位。相对于其他4种插值方法而言,普通克里格法生成的空间插值图,更能准确表达天津表土DDT浓度的空间分布特征,其细部的浓度变化也更清晰。

References

[1]  Kannan K,Tanabe S,Tatsukawa R.Geographical distribution and accumulation features of organochlorine residues in fish of topprical Asia and Oceaniz[J].Environ Sci Technol,1995,29:2673-2683.
[2]  龚东明,陶澍.天津地区土壤中DDT的残留分布研究[J].环境科学学报,2003,23(4):447-451.
[3]  Chen S P,Chen Z W.Atlas of environmental quality of Tianjin[M].Science Press,Beijing.1986.
[4]  天津市环境保护局.天津市环境质量报告书(1991-1995)[R].天津:1996.229-231.
[5]  Voltz M,Webster R.A comparison of kriging,cubic splines and classification for predicting soil properties from sample information[J].Journal of Soil Science,1990,41:473-490.
[6]  Weber D,E Englund.Evaluation and comparison of spatial interpolators[J].Math Geol,1992,24:381-391.
[7]  Laslett G M.Kriging and splines:An empirical comparision of their predictive performance in some applications[J].J Am Stat Assoc,1994,89:291-409.
[8]  Hosseini E J Gallichand,Marcotte D.Theoretical and salinity analysis Trans[J].ASAE,1994,37:1799-1807.
[9]  Gotway C A,Ferguson R B,Hergert G W,et al.Comparison of kriging and inverse-distance methods for mapping soil parameters[J].Soil Sci Soc Am J,1996,60:1237-1247.
[10]  Schloeder C A,Zimmerman N E,Jacobs M J.Comparison of methods for interpolating soil properties using limited data[J].Soil Sci Soc Am J,2001,65:470-479.
[11]  路鹏,彭佩钦,等.洞庭湖平原区土壤全磷含量地统计学和GIS分析[J].中国农业科学,2005,38(6):1204-1212.
[12]  Gringarten E,Deutsch C V.Teacher\'s aide:variogram interpretation and modeling[J].Mathematical Geology,2001,33(4):507-534.
[13]  李新,程国栋,卢玲.空间插值方法比较[J].地球科学进展,2000,15(3):260-265.
[14]  Warrick A W,Zhang R,El-Harris M K,et al.Direct comparisons between kriging and other interpolators[A]//P J Wierenga and D Bachelet (ed.).Validation of flow and transports models for the unsaturated zone[C].Proceedings.New Mexico State Univ,Las Cruces,NM.1988.
[15]  Laslett G M,McBratney A B.Comparison of several spatial prediction methods for soil pH[J].Journal of Soil Science,1987,38:325-341.

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